```sql

INSERT INTO TraineeInfo (TraineeID, Name, Course)

VALUES ('T', 'John Doe', 'VR Welding Basics');

```

```sql

SELECT TrainingProgress

FROM TraineeInfo

WHERE TraineeID = 'T';

```

```sql

UPDATE TraineeInfo

SET Course = 'VR Machining Fundamentals'

WHERE TraineeID = 'T';

```

```sql

DELETE FROM TraineeInfo

WHERE TraineeID = 'T' AND Graduated = true;

```